Trip-hammer



P. L. WEIMER.

Power Hammer Patented v Sept.

N. PETERS. Pinto-Ulhugnpher. Washinghm. ac,

UNITED STATES PATENT OFFICE.

PETER L. WEIMER, OF READING, PENNSYLVANIA.

TRIP-HAMMER.

Specification of Letters Patent No. 13,608, dated September 25, 1855.

To all whom it may concern:

Be it known that I, PETER L. VEIMER, of Reading, in the county of Berks, the State of Pennsylvania, have invented a new and improved mode of operating common tiltor trip hammers, so as to make the blow variable in force and at the same time maintain a regular speed; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The nature of my invention consists in applying a peculiarly arranged stroke, to the journal or axis of the husk of a trip or tilt hammer, which brake so operates that the hammer is always free to rise, but in falling is under the control of the brake, so that by tightening or loosening the brake the force of the blow of the hammer will be increased or diminished at the pleasure of the operator, the hammer can also be gaged or held against the spring by the same means if necessary. By this arrangement the blows of a tilt or trip hammer are so variable as those of a steam hammer.

To enable others skilled in the art to make and use my inventionIwill proceed to describe its construction and operation.

On the axle C of the husk or helve of the ordinary constructed tilt or trip hammer shown A A A, Figure 1 in the accompanying drawing, of which Fig. l is a side view of hammer with the brake; Figs. 2 and 3, detached portions of the brake.

I key or securely fasten the hub or center piece B. Said hub has a-number of rectangular openings G G G in the lower half of its circumference. The pawls F F F slide in these openings and by their own weight act upon the teeth of the ratchet ring D. The teeth of this ring are cast on a chill so as to insure durability and strength.

P is a post of wood or iron extending downward and fastened at its lower extremity to the framing of the hammer.

S is a metallic strap running from the post P and encircling the ring D.

W is a wood lining for the strap S.

E is the hand wheel for operating the strap S. Said hand wheel has nut in the center and works on the screw coming from the strap S through the post P.

It will be observed that when the hammer rises the pawls F F F slide into the hub B caused by their one side being angled to suit the angle of the teeth in the ring D. WVhen the hammer falls the straight side of the pawls F F take hold of the straight side of the teeth in the ring D and carry said ring along with it. It should be noticed that all of the pawls F F F are not in gear at the same time, but are spaced oil so as to divide the pitch of a tooth into the same number of parts as there are pawls in the hub, thereby preventing any injurious back lash.

Now then there is friction produced on the outside of the ring D by means of the strap S and hand wheel E the force of the blow of the hammer will be found to vary in proportion to the amount of friction produced. In order to gag or hold the hammer against the spring it is merely necessary to produce friction enough to overcome the weight of the hammer. One of the great advantages of this arrangement is, that in forging when the article under the hammer is to be finished requiring soft blows they can be given and the speed of the hammer increased if necessary, instead of diminished as is the case with the present hammers.

Having thus fully described my invention what I claim and desire to secure by Letters Patent, is-

The arrangement of the hub or center piece B, the pawls F F, the interior ratchet ring D, the lined metallic strap S, the hand wheel E, and the post P, the whole being combined, arranged and operated in the manner substantially as herein specified.

PETER L. l/VEIMER.

Witnesses MATTHIAS MENGEL, DANIEL MOKENNA. 

